my four are fine.

but they use epic control boards and are set to 3000 watts.

They all use 240 volt psu's the one that the s19xp's use.

 these psu's just version f spec to 277 watts.




https://altairtech.io/product/apw121215-bitmain-power-supply-psu/

must be version f



and my units are doing about 17 watt a th